Woodworking machine



Sept. 15, 1931. l*'A. B. JOHNSON WOODWORKING MACHINE Filed Jan. l2, 1931 13 Sheets-Sheet l4 SePtl5, l931- A. B. JOHNSON WODWORKING MACHINE Filed Jan. l2, 1931 13 Sheets-Sheet 2 /NVEN TOE ARTHUR B. JU/NSN mi Hanru-H A TTQKNEVS Sept. l5, 1931. A. B. JOHNSON 1,823,272

woonwomms MACHINE Filed Jan. 12, 1931 13 Sheets-Sheet 3 Fla. Z-A

www M Arroz News' Sel-'IL 15, 1931- A. B. Jol-iNsoN 1,823,272 y WOODWORKING IACHINE Filed aan. 12, 19:51 15 sheets-sneu 4 /Nvr/v-roz ARTHUR B. JOHNSON A Troc/Vgn? Fmt/7 Sept. l5, 1931. A. B. JOHNSON 1,823,272

WOODWORKING MACHINE Filed Jan. l2, 1951 13 Sheets-Sheet 5 ze I l J I 1.' zJ/' i @E j@ FIG.5

:a /l l 7 Y Li 9 8 Z7 /e I f/kvvE/vrofe n ART/'IUE JOHNSON FIG. 6 OQ A 7' Toc/VEYS Sept. 15, 1931. A. B. JOHNSON wooDwRxING MACHINE Filed Jan. `12, 1951 15 Sheets-snee?l 6 www A NVENTO/e. A THU@ JOHNSN a 6M, (l-4 ww y ATTORNEYS Sept.' l5, 19,31. A. B. JOHNSON wooDwoRKING MACHINE Filed Jan. 12, 1931 15 Sheets -Sheet 7 A sept. 15, 1931. ,1 B, JQHNSON 1,823,272

WOODWORKING MACHINE Filed Jan. 12, 1931 v15 sheets-sheet a I Wmf/ /04 /NVg/lvrolc la: /03 /0 0a /oz g77/yg B.JOHNSON F ./G- /3 afm, @we ww ATTINEYS F I6. /2-A Sept. l5, 1931. A. B. JOHNSON "1,823,272

y WOODWORKIG MACHINE l Filed Jan. 12, 1931 13 Sheets-Sheet '9 T7292 Ngtys Sept. 15, 1931. A. a. JOHNSON wooDwoRKING MACHINE Filed Jan. l2, 1931 13 Sheets-Sheet l0 Z Z m,

N m Mm :NZM 3. n Wa MN B sept. 15, 1931.

A. B. JOHNSON WOODWORKING MACHINE Filed Jan. 12, 1931 13 Sheets-Sheet 11 A T TOENE Ys 3Pt 15, 1931 A. B. JoHNsoN 1,823,272

l A WOODWORKING MACHINE Filed Jan. 12, 1931 13 Sheets-Sheet 12 /N VE N TOE ARTHUR B. JOHNSON ATTORNEY.,

SeP- l5, 1931. A. B. JOHNSON l,8?3,272

WOODWORKING MACHINE Filed Jan. 12, 1931 13 Sheets-Sheet 13 F' la, 3/

/N vzNTo/e ARTHUR B.JOHN50N @VWL/c, Wwf mw TTOBNEYS Patented Sept. l5, 1931 UNITED STATES f PATENT OFFICE ARTHUR B. JOHNSON, rOF MINNEAPOLIS, MINNESTA, AssIeNOn To ANDERSEN FRAME CORPORATION, or BAYPon-T, MINNESOTA;A.Y OORBORATION OF WISCONSIN WOODWORKING 'MACHINE l' Application filled January 172, 1931; Serial No. 508,055.

invention relates to the type o fwoodworking machine shown and described in my pendingL application OrLetters Patent for the United States, lNumber 233,l65, led s f November 14, 1927. `The object of my present invention generally is 'to improve,` .and Simplify the machinedisclosed in the above named application to the end -that work of Vvarying lengthsand widths may be more easily kand conveniently handledin themach'ine, and, further to the end that the operating rparts may be reduced in number and @made easy of adjustment .and thereby the production increased work improved.

and the quality'of the 'Thefobjects specifically of my present invention'are to provide improved means for relative adjustment of the work supporting skids `and feed belts andthe dado cutters and for holding they Work firmly on the` sliids during the dado cuttingr oper`ation.

A further obj-ect is to provide improved meansffor laterally adjusting the work sup-y porting skidsandprimary feed belts and sif inultaneously eiecting a corresponding adjustment ofthe secondary feed belts by which the `work is delivered to the elevating carriers.

i A urtherobject. is to provide improved carriers, wherebyzthe work may -be automatp icallyfpicked up and held securely clamped yduring the edge notching operation, with its'L nature Q requires. Y n i An additional obJect yis the improved means for supporting the end and intermespecial provision for tilting the work when diate 'notching heads withprovision for readily adapting them for work of diiierent dimensions and grouping the heads with in dependent operating means upon opposite ysides of the work.

feedingvtlie material therethrough;

Ffgure 2 is aside elevation of the machine; ,-,Figure b Q A is. a sectional View on line 2A 2A of Figure 2.

Figure 3 is a plan view 4of the machine he relative positions of the cuttery showing heads or saws and the skids;

yFigurel is and enlarged detail sectionaly view on the line 4 4 ofvFigure 8, showing the receiving endy of one of the horizontal skids; yFigure 5 is atl plan view of Figure 4, showing the means for laterally adjusting a skid; -Figure 5a is a detail sectional view on the line Ifia-5f? of Figure l; Y

` F'gure 6 is a detail sectional view on th line 6 6 of Figure 4;

5, Figure 6 is a detail sectional View on'the line 6& 6a O'Figurel;

Fifure 7 is an enlarged detail sectional view substantially on the line 7 7 of Figure 3, showing the means for holding the sills or 'jambsj firmly upon the horizontal skids while cutting the transverse grooves or dadoes therein; A

Figure 7 A. is a detail sectional view show-, ing the lugfthat is engaged by a jamb for advancing the presser belt;

Figure 8 is a detail sectional View on the line 8 8 of Figure 7 with some ofthe parts being shown in full;

Figure 9 is a detail sectional view on the line 9 9 of Figure 7, showing a'device whereby the Work holding means may be vertically adjusted with respect to the horizontal skids; f

. Figure l0 is an enlarged detail sectional view on the line 10 l0 of Figure 3, showing a portion of one of the vertical skids and the particularly pointedy ne 1 1 of FigureB, showing the general constructionV ot the machine andthe manner lof ltially in section showing one,y of the carriers for conveying the work upwardly oii-..the'-up L right skids, andthe means provided on each carrier for holding the A work. against the skids, and aise the means forv angularly'- adif justing the carrier with respect tothe shid-s; I Figure 12-A isa detail sectional view on section line 12A-12A of Figure 121' I Figure 13 Vis-'aV sectional planviewron the line 13-13of Figure 12;

line-,Vl-4-14 of Figure 122 Figure 1'5- is a detail sectional view on the:

lfiiie15-15 of Figure 3, showingA the means for preventing; endwiee movement u of the werk; whilebeing conveyed upwardly by thee carriers; Y

Figure 1.6; isf a detail sectional viewv on the line 16-16 of Figure 155:; s Y

Figure 17 is aadetail sectionalj view on theflinef 17-17. of Figure 35i showing the: meansl forA timing the vertical conveyer beltsI with respect; to` the; horizontalconveyer;

FigureV 18 i's-f anv enlarged detail'A sectional view on thezllineflSf-ll of Figure, showing the means for adj ustably supporting thecutter,v units which: cutrthe notches ina longi- Figure 19 is azsectional viewon the' linee f9-19f of F igure; 18', showing thenieans for adjustab-ly varyin'gfthe' depth` ofthe cut ,',Y

,Figure..21 is; a perspective view vshowing the sill' before the dado'es and. notchesare cut'y therein, the form in; which the sills are Y delivered to the machine Figure-22 i'sxaaperspective view showing a sill with a plurality of dad'oes' cutV inf the upper surfacethereof;;`

Y",Fignrer 23 is: ai view similar to'y Figure '22,

Y showin-gthe sill provided with.notches.iny

before` the dadoes arecut therein;

Figure 27 is a View showing a head2 jlanib halving dadoe's cut in a surface thereof g,V

f Figure 28- is. ak view showing'a head jamb' lifaving'a plurality ofdadoes cut therein. and also having notches cut in one of its' longi-Y tudinal edges; y Y

' VFigure 29 is a 'view' showing 'a different type. of' head4 jamb before cutting the dad'oes and notches therein;

Figurey 14 is adetail sectional. view on the the front and' rearlongitu'dina-l edgestherej.

Figure 26 isf ai View showing a head jamb V Figure 30 is a view showing the head j amb illustrated in Figure 29with a plurality of dadoes cut in a surface thereof; and,

Figure 31 is a view similar to Figure 30, but showing notches cut in a longitudinal edge: ofthe jai-nb.. y

The. general construction` of theframe and operating parts is muchthe same .as disclosedin my application above referred Ato and the preliminary description of theVK nia:-

chi'ne with reference particulfarly'toA the driv- Yinguinechanism will correspond substantially to the description of the same parts in my former application.v Referring to Figure 3 of the drawing, 2 represents a suitable frame of. proper dimensions fora machine of this kind; 3 is a', driving shaft operated: by a suitable electric motor 4 and mounted in ai suitable bearing; transversely of the machine frame.;This shaft isl provided with trim.- mingsaws 5f for squaring the ends: of the work and with suitable cutter heads 6, by means" of which dadoes 7 are' formed transversely in the-surface of the work 8, as sho-wn in` Figure 22'; Figure21 showsasill as itisV fermed preparatoryzto its lenti-.ance or del'iivs ery tothe dadoing mechanism. rFliese saws` and the dado cutterlieads are preferably iii'ountied;directly upon the thriving.shaft,l so: there is no intermediate driving'meehanism;

' pear. A shaft 9f`is mounted in bearings' in the -Figure. 2() is a; viewAV diagrammatically: il-V l-ustr'ating the"V driving connections between vth'ez'various parte` ofthemachine ,i

machine frame parallel with the shaft 3 and has a pulleyA fO driien through a,- belt 11y from,

the shaft.v This forms in effect a counten shaft. Y A. suitable gear` reductionV mechanism contained within a b'oX l-2connectsthe shaft 9' with a gearreduction shaft 13- .and a belt.

14 connects this gear reduction shaft with acomparatively large pulley 15having prefhereinafterappear.;V .u

,The top of the machineframe is provided,

with what I- prefer to designate as'skids- 16 which extendacross the=machine,and in these skids feed chains 17 are suitably :mounted beneath ahopper 18inwhichfthe sills 8 ory other-work is placed, one upon the other', preparatory to the feeding operation. The feed chains have lugs 19 thereon atinteiva-ls which,

engagethe sills as the chains are' operated to feed the bottoni sill, or other work from beneath the others, the movement being edgewise as usualY in a feeding operation ofthis4 kind. A; plate 20 is securedby suitable'ineans to the feed belt and the upper surface of'this' plate andthe lowerV surface of the lug 19 are serrated and secured together by a` cap screw' 21 which is tapped intov the' plate 20fand lUU llU

passesv Ythrough a slotij22 the base of the lug. The head of the screw bears on theV wall rofthe slet to clamp the lugsecurely onfkthe belt.r When the screw `is loosened the lug may be adjusted such distance as yis'permitted by the length of the slot y22for the purpose of changing 4the position" ofthe lug/on the belt. This adjustment is often desirable toenable themachine attendant yto properlyalign the lugs onA the diiferent belts'vand .accurately time f theircontact with the Work.

- d'erstood that each of the lugs on alloil the .belts is. mounted inthe manner above de- It will be unscribed. Asuitab'le tightener 23 supported y on each-skid maintains thedesired tensionL on-thfefeed'belts and, while I have shown a group foffour of thesebelts in this machine,

a greater or lesserl numberof them may be provided according to the length of the'work that is being passed through the machine. .y For the purpose-,of conveniently shifting the skidsback and vforth in parallel relation onl` the machine frame to adjust them the. vproper.,distance apart for the work that isr beinghandled,`1 provide racks 24 onv the bars f ofthe'frame and shafts 25 are mounted on the Y skidszasshown inFigure3,and have pinions 26which engage the teethA of the racks24. The machine attendant may thus revolve the shafts '25 and move the skids horizontally vbackend forth across ythe machine until` the desired a'djustmentis obtained'. During this movementtheskids are held and guided and f preventedfrom moving vertically by plates 35 27which slidably engage jshoulders 28 on the machine frame; see Figure '1. y

Thefshaft 3 as shown plainly in Figure 3,

kis provided with a key seat or way whereon thefjsaws and cutter heads are adjustable in a suitable way to allow them to be properly po sitioned with respect to the feed chains land.

the work.y

The machine framek is provided with an uprightbracket 29 Aand bearing` brackets 30k for the shaft 3 are provided at each .endof yslidable manually on a guide 33 provided on the member 31. I prefer to yadjust the 'end bearing brackets simultaneously by means of a shaft 34 having ,an operating` wheel 35 and a worm and4 wheel connection 36 with up-4 rightr screwv threaded rods 37 which are mounted in the bracket 29 and have their lower ends inthreaded engagement with the bearing brackets30. Movement of the wheel 35'w'ill raise vor lower the brackets 30 and ywith, them the shaft`-30 andthe-saws and cutter heads and evidently the bearing bracket 32rwill also beraised and lowered, as it mounted on the cross/,member thatis secured to the brackets 30.y The screw 37 has anend 38 adapted to engage a suitable tool by means of which either screw rod may be operated to raise or lower its bracket 30 independently of the other bracket, and thus ef fect an accurate adjustment of the saws and cutters with respect to the work. The simultaneous adjustment of the shaft and all the saws and cutter heads is usually preferable for the purpose of obtaining` the proper working position of the dado heads according to the thickness of the work.

Means is preferably provided for holding the work down upon the feed belts andskids during the operation of the dado cutters and the trimming saws` This means comprises a `frame 39 provided in connection with each of the cutter heads, as shown in the plan View Figure 3. The corners of each frame are provided with sprocket wheels 41 andl a belt 42 encirclesthese wheels, and the spindle 43 of one wheel is slidable in slots 44 provided in therframe and adjusted by means kof a yset .screw 45 whereby the tension of the belt 42 may be increased or decreased as desired. Lugs 46 and 47 are arranged in pairs on the belt and vary slightly in length to adapt them for Vcontacting respectively with the thinner and thicker portions of the work` Figure .7. Each of the frames 39 is vertically slidable in a guide 48 provided on a bracket plate 49 suitably secured to a cross member 50 in the frame of the machine, a plate 51 secured to the bracket 49 land the cross member forming preferably one vertical wallfof the hopper. Slides 52 are secured at their upper ends to the member 50 and are movable vertically in guides 53, the extent of such movement being limited by a slot 54- and bolt 55. A rod 56 has a threaded connection at 57 with the 'slide 52 on each side of the machine for raising and loweringfit in the guides 53 when the rod is revolved, and an operating wheel 58 is provided by means of which the slide on each side of the machine may be raised orlowered independently of the other side until the exact degree of adjustment and level is obtained. With the vertical movement of the cross member 50, the presser belts 42 with the lugs thereon lare .also raised and lowered simultaneously and to provide for independent adjustment vertically of cach presser belt, I provide a clamping screw 59 having threaded engagement with a lug G0 and adapted to bear on the bracket plate 49 whereby the at tendantmay easily and quickly revolve the kscrew and raise and lower each presser belt independently of all the others, and by the adjustment of the threaded rods 56 the cross element '50 and all the presser belts carried thereby may be adjusted simultaneously toincrease or decrease the pressure of their con'- tact with the work that is fed beneath.

As shown plainly in Figure 7, the presser belts areV adjusted laaitomatically during the 5l operation.

feeding operatin ofthe work' bjr the engager-- ment of tlielugs' 4.6. withv the shoulder formed:

' on` the work. .Y i l Y The sill, being advanced from the hoppen 5 by the movement'of the feedv belts, willv slide alongV the surface oftheskids until' the shoulLA der formed on the upper surface ofl the-silk contacts with'tlie longer lugs.. 46, whereupon the presser belts will'be moved and the posi 3io tion'of the lugs changed, so that as eachl successive sill is fed under the presser belts, a pair of the lugs on these belts will bemoved into positionE to rest onthe top of the sill and4 hold it firmly down on the skids during the operation of. cutting the dadoes therein, or trimming the endgsofthe work.. In this way the movement of the work itself ad-v vanced. by the feed belts changes the posi tion of the presser belts sol there will* always 2G be a pair of" the' lugs onthesev belts in posi-f tion to.. Contact with the work and hold it f i firmly and' as the sill advances on t'he'- skids-v and passes out from under apairof the lugs,d another pair will be shifted', one of them in Y Z5? position to engage the shoulder oni the fol'- lowing piece o-f .'worlq. to repeat 'the adjustment of the belts. Y Y

` W'hen a jambvis' fedinto'the machine-two v lugs 47 of the same length are provided on each presser belt and also a third larger lug 46a (Figure 7-A)` which is 'engaged by the moving amb andthereby the belt is in oved tolposition theV lugs 47 to bear on the jamb n and hold it firmly during the dado cutting" In feeding jambs having straight orsquare longitudinal edges, lugsrv 19a having correspending faces to meet the square edges of ,l the jamb are substituted for the lugs I9 onl the feed belts which have beveled faces toiy meet the corresponding face ofeach sill".Y In other respectsv the feedingV of the jambs, the holding of them, and cutting the dadoes 1n the surfaces tl'iereof7 will be performed Yin substantially the same manner-as described with reference to the sills.` u

By means of the foregoing described mechanism the work, such as sills and jambs, may be trimmed at each end and dadoes formed at the endsalone or at the endsand middle portion, or any other point ifdesi-red, thesedadoes. being of any desired depth de-v pendinguponthe vertical adjustment of thelcutter heads supported over the work, and when the work passes from under the cutter heads it is received by a second feature of thel machine, where provision is made for moving Lthe work at an angle to its previous direction of movement and notching or cutting recessesV in. one or both longitudinaledgjes of the workA during said angular movement. The mecha.-

nism which I preferably employ which embodies an@ improvement over the structure, 5 of myj-application above referred to forthis may be moved` to aI release position and then purpose', I.Y will' new` proceed to: describe .The shaftl, Eigureil, onwhich the pulley 155 "is ino-matedvprovidedwith a gear 621 having a driving connection 63 with one end 70 of a shaft 64,v which in'turn drives a short shaft 'fthrough a Vchain belt 66; see'Figure 20'.. Double sprocl'cet'hubsf''.' are mounted in the ball bearings(Figure 5a) and are' keyseated onthef'shaftt to slide thereon.. The innerx ends of the skids 16S-are mounted on these double sprocket hubs and frames lta are also securedv to said hubs and project in; wardly and downwardlytherefrom; One of the double sprockets inconneotion with each skid engages the. feed belt of'that skid andt supplemental feedlbelts 68lconnect the other member of'each double-sprocket with similar sprockets 69, mounted in the lower portions of" the frames: 16a; see Figures l? and 20. When, therefore, the operatorgadjusts ythe skids 'laterally on the machine frame to change their relative position and compensate for varying lengths of the work, a similar adjustment will at the same timel be effected of the frames 16a, and the supplemental feed belts carried'thereby, the double sprocket hubs.

sliding back and forth on; theishaftf to allow forthe adjustment of the primary and secondary feed belts.V Upright skids 70- are slidably supportedupon a transverse I beam 7lthat is bolted atV 72 to thev u-prightflangesof brackets 73 seated upon the machine frame' and sl'idable back and forth thereon, there beingpreferably onebracket on each side ofthe.4 machine'as shown in Figure 3. Adjusting screws 74 have worm and wheel connections7 5 with aY shaft 7 6 by' means of whichY both screws 74 may be operated simultaneously to move the brackets' 73' back and forth on the machine. frame. The screws are tapped into the baseofI the brackets and provided with lock nuts 77 which by means ofa suitable tool engaging the outerv no end'yeac'hscrew may be adjusted to move one bracket' independently of the other one until the exact alignment is obtained.

Referring to- Figures I, 10, and 11, the skids 7'0 are shown provided. with plates 78 adapted toengage the opposite flanges ofthe .Ibeam for the purpose of` guiding the skids: in their movement back; and forth on the I beam, there being preferably two pairs .of these guiding platesV as indicated) by dotted lines. in: Figure ll. The I beam is preferably' provided with a rack bar'79` and each skid has a shaft 80 provided witha pinion-8l to mesh. with the rackl barrthe end of the shaft being: adapted to receive a suitable tool by means of which theshaft may be .revolvedI andthe skid moved until the desired adjustment of the elevating carrier ifs obtained?. .Figures f and; 2. AL shaft 82 is journaled at'its ends' inbearings 83 provided on the brackets 73 and a driving belt 8,3a engages the teeth ofv a sprocket wheel 84 on the'sbaft',` A hub 85 -is secured on one end of theshaft 82 and is provided with afriction ring 86 against which a gear ring 87 is seated and securedby means Y of a clamping ring 88and bolts 89which pass through said ring and areV tapped into 'the' hub 85. -'l`his 'manner of mounting the gear ring'87'allows for its rotary adjustment independently of the shaft 82 whereon kit is mounted and enables the attendant to shift the carrier belts and the carriers mounted adj usted'in the desired position to receive the work that is to be' notched from the secondary belts68 the upper endsof'the skids having-bearings for the shaft 82 and slidable thereon toA shiftthe hubs of the hall bearing sprockets (Figure 6a) 92 back and forth in asscciated parts corresponding to that for each of the other carriers.

Referring' to Figures 12,'12-'A.,`13, and 14,

95 represents an angle platethat is secured toa'link of theelevator belt 91 and is held within a recess provided in a bracket 92a by ebelt-93a. The bracket 92a has flanges 94 slidable in guides 95 provided inthe Vface of i the skid and is secured tothe carrier belt and a plate 96 'is pivoted on said bracket at y97 andi has a limited oscillating movement with 4respect to-thehracketby means of a slot 98 and abolt 99 fitting looselytherein, adjustment of saidpl'ate 96 onifthe bracket being obtained by'means ofV spaced-holes 100 vin the bracketfadapted to receive a spring pressed pin 101..'` The' attendantabyfpulling Vthe pin c out of engagement withfbne of the holes 100r may-swing' the plate k96 on its support to a tilted positionv with respect thereto.. The

plate 96 has lugs 102and 103 wherein a rod 110-tis slidahlelr A. block 105 is carried by the plate 96 and has earsrfl06'andylOGa,A These ears receive the rod N11-andthe outer ear 106a is secured to this rod.A compression spring 107 ismount'edfon Athe rod between the lus` 103 andllocknuts 108 which have ay threaded adjustment on said rod by means of which' the tension of the spring can be considerably increased or decreased as desired. The block 105 is provided with a longitudinal opening 109 and a sliding jaw 110y is adjustably secured in said opening by means of a bolt 111. INhen this bolt is loosened the aw may be adjusted forward and backward on the block 105. The outer end of the jaw has a flange 112 and is adapted to engage each piece of work and press it firmly against the upright face ofthe adjacent skid so that the work will be securely held during the notch-` ing operation. A plate 113k is secured to the Wall of the skid in the path of the rod 1011,l said plate having a lower cam face 114ik which, in the ascent of the carrier, is positioned to engage the end of the rod 104 and project it, the block 105, and the jaw carried thereby outwardly to the position indicated by dotted lines in Figure 12, where it will pick up the work from the belts 68, and as the upward movement of the carrier continues the bolt will slide on the vertical ed ge of the plate 113 until it reaches the cam face 115,'which will permit the rod to resume its normal position and the jaw flange engage the edge of the work and hold it firmly on the carrier during the notching operation. To adapt the carrier for workof different widths, the jaw 110 may be adjusted on its support and thereby suitably positioned to receive and clamp the work as it is engaged by the vertically moving carrier.

When a sill is to be notched and it is desirable to tilt the work to form a notch of uniform depth by the operation of the cutting head, the pin 101 will be drawn out and the plate 95 adjusted and in case an adjustment between the holes 100 is desired, it may be effected by allowing the pin to restv against the face of the bracket 92a and securing the plate 96 by tightening the bolt 99 in .they slot 98. rIhus any desired adjustment may be obtainedy to compensate for the beveled edge of the sill that is to be notched. r.

To compensate for the slack in the driving belt 83, rdue to the forward and backward adjustment of the skids and the I beam 71, I prefer to provide a bracket 116 on the I beam whereon a sprocket wheel 117 is ad justably mounted and adapted to engage the links of the belt 83 and thereby the tension of said belt is increased or decreased as dethe carrier and has a rack and pinion connection 121 with the guide 118, by means of which whenv the shaft 120 is revolved the carrier may be moved back and forth hori- Zonta-lly on the guide .toradjust `it With Erlespect to the Work. 1 A cutter head 122 is mounted on an arbor 123 driven by a motor 124i,V and suspendedvon the carrier .119 by means of platest125. A rod 126 mounted on the .carrier has Ya threaded connection at 127 with the frame of Ithe motor whereby when' the rod 126 yis revolved,'the motor vand the cutter head may be moved back and forth toward or from the supportingyguide 118 to adjust the cutter head for the varying dimensions Vof the Work and the desired depth Yof the notches .to be cut therein. `As

indicated inV Figure 2-A, I have provided end notching uni-tsv of the type 4above described lor different lengths and kinds of Work which l will :indicate Aby a rgeneral rele'rence )letter Alrand'adjacent thereto an intermediate notchingunit designated by B,

and corresponding in structure to the unitl A except Iin the .fo-rm vof ut'heznotclnng cutguide back and forth across th-e machine te vafd-apt them `for sills for jambs 1otfdiv-ii'ere-nt lengths, `lbut each lunit is `also capable of adjustment at right angles' to 'its :adjustments on the supporting guide :so 'that not onlyfcan 'the machine `bereadily adapted for varying lengths ol Work, bntalso forvVo-rk thatvaries in Width; yor to enable the attendant 'to cut notches of vary-ing depth in the different pieces -of Work. These units will have independent operating motors and infadditionto their independent `adjustment may be operated independently v"of one another fas may bedesired. Y v v `Any suitable numberof `these motor operated units maybe provided, according-to thel nature' of the -Work' tofloe performed.

. Y The notching .mechanism above. described yvaillormthe end zandmiddfle notches 'in the "sill, .faslsh'own'in the perspective 'view of the sill .in Figure 23. glnfsoinefca'ses, howevenit 1s 'desirable to motchothe yopposite -edge'of ith-e Y sill, :as'illustratedin this same `vfigure and ato 'accomplish this,Tprovidelcarriers 128 'slidablyrsupportedzat'29 on ythe lower flanges of the I beam 7l. These carriers have .rack

aindfpinion adjustment, as indicatedfzat 130,

corresponding to the adjustment heretofore described Vwith `reference to .the .earriers'11i9, provisionb'eiing made for moving the carriers 123 back and forth fonjthe VfIb'eam-in the S-same mannerfa's lclescriloedwith reference :to the V carr-ien's 119. VBene'atlfiieachcarrier'123 is a frame supporter-lin guides 132 on 5'the carri-ers 12,8 and iadjustablefback and "forthV vWith respect t'osaid' carriers toward andffrom the opposite cutting `head of unit A. 1- A rack and 'pinion mechanism, not shown, correspondingto that illustrated in detail in FigureslS Aand 19, :is provided Vfor each frame 13:1 so that v'the attendant'by means of these adjustments may move each supporting frame'illl and 'the `cutter head 133 vcarried thereby V.to adjust the cutters With-respect to the Width of the Work and the depth of the As .shown inFigu-re 2.5, it is sometimes idesirable to provide a piece of vWork With double notches at each end, VYin whiichfcasetvvo 'of these notches, one at each endet-:the sill and the V.intermedi'ate notch, rare formed by the units B :and to form lthe second end notch :units C, as shown .in Figurel 3, are provided. l These unitslhav-e carriers 134 slidab-ly supported on guides 135, each cutting head 136 being supported in a `iframe 137 Ithat is mounted on the carriers l1341. The carriers and the kframes supporting the notching heads are adjustable by the 'same means provided for ithe units A and B, and ,I'Will findicate :the radjusting means by the Vsame reference numeral with the `addition of the eX- ponent' "4a." These iunits sC, as illustrated plainly :in Figure2 :of the drawing, are supported above `the level of .the units A and B and consequently Yrnayfbe moved back and forth Lover these units, and Whenfnot in use may .moved toV one side, as indicated by full lines in Figure 3, vWhere they Will not engage the Work and not in Yany Way interfere with the `operation `of the units A iand B. When, however, the nature ,of the Work requires the additional rend notches, these units C 'can be" easily 'andfquickly adj-usted to a position Where -their cutting or notching heads Will engage the ends `of; the Work and Y machine, some of the groupsi'being on the same 'level to notch opposite @longitudinal edges of the Workfand other 'units being upon adilerentlevel, all Lto .the end that the notching operation maybe performed in an accurate expeditious manner. :I Vdo not, however, Wish to 'be 'conned vto the particular number Vof the motorjunits shown lherein lor the relav tiveposit'ion oftliese units, as suitable variations m'ay 'be `made according to the size and the character Vof the Work, each unit being capable-of adjustment independently of the other units so that notches joli" varying-depths VmayV be foi-med in thesius and'jambs, and the position of these notches may be varied to suit the needs of the manufacturer.

. Referring now to Figures 15 and y16, it is desirable to provide some means to prevent longitudinal movement of the work during the notch cutting operation, and with this end 3 Cri:

f another Lextending 'across the machine', the

in view,.I provide carriers 138 slidable back and forthon the I beamf7l andsupporting bars 139jhave vertical edges 140 for contacting with the ends of thework.y The bars 189 .areadjustable on the carriers by means of slots-141 and bolts142-which pass through the 'slots 141 and are tapped into the carriers.

f Uponloosening these bolts, the bars 139 may ybe moved horizontallyindependently of the adjustment of the supporting carriers. The lower ends ofthe bars are slightly tapered, asV indicated in Figure 15, to prevent any portion of the work contacting with the ends ofthe bars and interrupting the operation of the machine. Assoon as the work has passed the notching heads it may be delivered by the carriers on the opposite side of the I beam from the notchingheads and discharged in I is illustrated, which I will designate by reference numeral 8c, shown with dadoes 7 c in Figure 30 and with the dadoes `and notches in Figure 31. A

4, In the operation of the machine the work to be grooved and notched is placed in the hopper, as shown in Figure l, one piece above skids supporting. the primary feed belts and thesecondary belts forming acontinuation of the primary belts having been properlyadj'u'sted to adapt them for feeding vvthe. work edgewise. The grooving or dadoing cutters andthe trimming sawsare also properly ad-4 justedv so thatthe ends of the work will be suitably trimmed and, at the saine time, the

desiredrdadoes will be formed in the upper surface of thework; each piece being firmly held down uponthe'y skidsy by the presser mechanism provided" in connection with each f y cutting head. f

As the work passes from the primary feed belts it is delivered thereby: to the secondary belts and each piece is moved into the path ofthe elevating carriers there being a group of these carriers on each elevating belt that is movable across the machine by the adjustment ofr the'r supportingskids this adjustment being for thek purpose of properly positioning theskids andelevating belts to adapt them for thefl'ength 'ofthe piece of work advanced by the movement of the secondaryfeed y belts. If the form of sill illustrated in Figure 2l is fedinto the machine, its surface will be grooved yas indicated in Figure 22 before delivery to the secondary feed belts. Upon delivery to the elevating carriers, the sill will be notched, as indicated in Figure 23, provision being also made for notching both longitudinal edges of the sill at each end and at other points if desired. l V` When it is desired to form a double notch at each end, the units C are adjusted to engage the sill following the operation of the units which notch one edge at each end and the middle portion. The elevating carriers are formed in such a way that the slides forming the jaws of the carriers will be moved outward automatically preparatory to receiving the work, and when a piece of work is seated on one group of carriers, the jaws will be automatically released to press the work with a yielding pressure against the face ofthe skids and hold it firmly in that position during the notch cutting operation, the cutting heads and the elevating belts and their supporting skids having been previously adjusted to adapt them for the dimensions of the work that is to be notched.

When the discharge point of the machine is reached, the carrier jaws will be in release position and allow the work to be discharged by gravity from the machine. lVhen sills are being notched, the carriers are tilted to adapt them for notching the beveled edge of the sill and thereby notches of uniform depth in their edge .will be formed.

In various ways the details of construction herein shown and described may be modified and still be within the scope of my invention.

I claim as my invention :l

1. In a machine of the class described, the combination with a suitable frame, of a drive shaft mounted thereon, cutter heads adjustably mounted upon said shaft to be drivenA thereby, skids supported beneath said heads, rack bars extending transversely of said skids, means associated with said skids and engaging said rack bars to adjust saidskids to vary the distance between them and to align them with respect to said heads, a hopper wherein the work is placed one piece over another, feed belts mounted in said skids beneath said hopper and having lugsat intervals to engage the bottom piece of work and feed it beneath said cutters the adjustment of said cutter heads and said skids adapting them for varying lengths of the pieces of work. y n

' 2. The combination with a frame, of skids and feed belts mounted thereon, rack barsl mounted in said frame, shafts mounted on said skids and having pinions meshing with said rack bars, whereby any of said skids may be moved back and forth on saidframe to] vary the distance between them, a driving rio 

